"But the practice of fixating on speck-plucking carries with it another grave spiritual danger, and that is the sin of unforgiveness. In the Parable of the Unforgiving Slave in Matthew 18:21-35, after a slave's plea for mercy, the Master forgives his debt of 10,000 talents, which is billions of dollars in today's currency. This slave then proceeds to physically abuse another slave for not repaying a debt of 100 denarii, or 100 days of wages for a laborer. The debtor slave makes a nigh-identical plea for mercy, which is heartlessly rejected, and the debtor slave is thrown in prison. Upon hearing of this, the Master then hands the unforgiving slave over to the torturers."
We must not become so fixated on social-justice and other works that we neglect the more important things and neglect to receive the whole counsel of God (Acts 20:27, 2 Tim 3:16). We need to take steps to guard ourselves from Pharisaical legalism and pride which Jesus directed some of His harshest words towards.
